Russia's attacks in eastern Ukraine mark a new phase in the war as U.S. officials believe they will prelude a major offensive in the Donbas region, a senior U.S. Defense Department official said Tuesday.
- The attacks, southwest of Donetsk and south of Izyum, have come as Russia continues to add to its forces in Ukraine and resupply those already inside the country, said the official who spoke on condition of anonymity to discuss intelligence findings.